vim: F3/F4 to tab left/right

got tired of typing gt/gT all the time

coc-settings.json

@@ -1,7 +1,8 @@
 {
 	"coc.preferences.jumpCommand": "drop",
 	"list.normalMappings": {
-		"e": "action:drop"
+		"e": "action:drop",
+		"v":"action:vsplit"
 	},
 	"list.maxPreviewHeight": 16,
 	"list.floatPreview": true,

vimrc

@@ -170,6 +170,8 @@ set tabline=%!MyTabLine()
 
 command W w
 map Q ZZ
+map <F3> gT
+map <F4> gt
 
 func Semicolon()
 	let line = getline('.')